According to the reports it happened because a technician installed the innertial measurement unit upside down. It was supposedly designed to be impossible to do that, but the technician found a clever way to bend the PCB :)
What I'm surprised by here is that the rocket didn't self destruct as soon as it started tilting - it could have easily flown towards the crowd. Is self destruct not a thing most rockets have?
According to the reports it happened because a technician installed the innertial measurement unit upside down. It was supposedly designed to be impossible to do that, but the technician found a clever way to bend the PCB :)